S
M
T
W
T
F
S
27
56°
29°
28
54°
32°
29
58°
29°
30
56°
34°
1
59°
29°
2
63°
35°
3
64°
29°
4
67°
34°
5
70°
44°
6
64°
35°
7
65°
37°
8
64°
39°
9
64°
34°
10
51°
34°
11
34°
21°
12
32°
18°
13
37°
22°
14
42°
21°
15
46°
24°
16
57°
20°
17
57°
36°
18
55°
29°
19
56°
20°
20
52°
25°
21
54°
26°
22
54°
29°
23
45°
22°
24
37°
15°
25
40°
25°
26
37°
23°
27
29°
26°
28
33°
26°
29
36°
29°
30
39°
26°
31
39°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Big Sky
Big Sky's October 2026 forecast shows daily high temperatures ranging from 29° to 40°, with overnight lows between 23° and 29°. The average high for October is 36° with an average low of 25°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Big Sky. See also: November | December | January.
